Anti-friction bearing



{ (No Model.) 5 J. G. AVERY.

` ANTI FRIG'TION BEARING.

110.267.991. Patented. Nov. 28, 1882.

UNITED STATES PATENT OFFICE.

JOHN G. AVERY, OF SPENCER, MASSACHUSETTS.

ANTI-FRICTION BEARING.

SPECIFICATION forming part of Letters Patent No. 267,991, dated November 28, 1882.

' Application niet May s, 1882. L (No model.)

To all whom it may concern Beit known that I, JOHN G. AVERY, a citizen of the United States, residing at Spencer, in the State of Massachusetts, havevinvented anew and u seful Improvement in Anti-Friction Bearings, of which the following is a specication.

Thisinvention relates to bearings for linesliafting and like horizontal rotary parts of machinery having horizontal axes, which require long bearings, butv may be sufficiently supported by a single series of hardened anti-friction rollers,coactin g with hardened surfaces, provided the rollers be properly distributed and guarded against displacement and binding.

The presentinvention consists, first, in wh at I term a long-roll shell, of improved construction; and, secondly, in a novel combination of parts, including said long-roll shell, constituting my improved anti-friction bearing for line-shafting, as hereinafter described and claimed, the objects of my invention being the preclusion at once of disarran gement and binding of rollers of any required length, and the facilitation of constructing such bearingsand applying them at any point to lineshafting.

In the accompanying drawings, Figure 1 is a half side view and half longitudinal section of my said anti-friction bearing forline-shafting. Fig. 2 isa transverse section on theline 2 2, Fig. l and Fig. 3 is an elevation of my said long-roll shell with one"""`llof its end rings partly in section, like letters of reference iudicating corresponding parts in the several figures.

My said long-roll shell is composed of ten` (or it may be more or less) smooth cylindrical rollers, A, of hardened steel or like hard and durable material, a like number of shouldered rods, B, which maybe of iron, and a pair of end rings, C, preferably of suitable brass,

drilled to receive the ends of said rollers and rods, and permanently and rigidly united by the latter. llhe rollersA are journalless that is to say, they have neither spindles nor trunnions-but their ends are preferably rounded, as shown, to keep them from cutting or scraping.

be required, being made of sufficient diame- They may be as long as mayter to insure the preservation of absolute trueness, which is essential. The rods B should be perfectly straight, an-d of sufcient thickness to uuitedly render the shell rigid without unnecessarily occupying roller-space. Their shoulders arel located with uniformity at the inner'extremities of reduced ends, one of which is exposed at z in Fig. 3. The length of these, with the corresponding width of the rings C, is determined by the demands of a secure and rigid union between said rods as a wholel and said rings, while said shoulders, located with reference to the relative length of the rollers, preclude binding the latter'in driving on the last ring by powerful endwise pressure, and

serve to insure parallelism throughout the structure.v The end rings, G, are provided with drill-holes tightly fitted to said rod ends, as shown at y,Fig. 3, and with chambers or cells a', Fig. 3, for the ends of the rollers, being made ot' sufticient thickness to preclude the escape of the roller ends from the latter in either direction, while exposingthe same properly and permitting them to rotate freely.

The respective pairs of said cells ac ofthe rings G, being kept in line by the shouldered endsz of the rods B, serve to keep the rollersA parallel to each other and to the axis of the shell, while the shell as a whole, once finished, is handled, applied, and removed as a single part with the utmost facility.

The other parts of my said bearing for lineshafting are a sleeve,.D, of hardened metal, with a smooth cylindrical outer surface, and apair of packing-rings, E, preferably of coinpressed leather, fitted to the shaftin g S, Figs.n

l and 2, and an internally-chilled metallic outer shell, F, into which said long-roll shell is fitted, said sleeve D being tted to the interior of the latter, with a pair of cap-rings, G, attached to the ends of said outer shell by screws s, Fig l. Said sleeve D provides the shafting with the'requisite hard surface to coact with the rollers A at any point,| and need simply be truly fitted and slipped into position, as the least friction between the shafting and sleeve is sufficient to insure their rotation together. said long-roll shell-to wit, with the end rings, G and with the ends of the sleeve D, precluding endwise displacement ofeither, while they Said rings E coact with the ends of 4 ICO serve also to exclude dust. The outer shell, F, has been constructed With horizontal trun- 'nions t, by which to support the saine in an approved form of hanger.

Having thus described my said invention, I

claim as new and desire to secure by Letters rods, and provided with cells to retain and eX- f vpose the ends of said rollers, as herein specilied, for the purposes set forth.

2. The combination of the cylindrical rollers A, shouldered rods B, end rings, C, hardened sleeve D, packing-rings E, internallyhardened outer shell, F, and cap-rings G, substantially as shown, for providing line-shafting with a long-roll anti-friction bearing at any point, as herein set forth.

3. The mode of applying a long-roll antifriction bearing to line-shafting at any point, substantially as hereinbefore specified.

JOHN G. AVERY.

Witnesses:

EMERSON STONE, E. M. WILsoN. 

